Hi Linder and welcome to the forum.
Short answer - you are being stupid. It does sound like he does want to move on from you for some reason. I would guess someone else.
He would much rather you break up because then it is not his fault or his doings. That is just my take on it, but I tend to be pretty synical.
You also did not elaborate on why he had to go to where his child is. What is the story about this child. Seems to me that this is an important piece of the story.
Good Luck.
